A vulnerability, which was classified as critical, has been found in IBM MQ Appliance and IBM MQ AMQP Channels 8.0/9.0 LTS/9.1 CD/9.1 LTS. Affected by this issue is an unknown function of the component Certificate Handler. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

IBM MQ Appliance and IBM MQ AMQP Channels 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD do not correctly block or allow clients based on the certificate distinguished name SSLPEER setting. IBM X-Force ID: 177403.

The weakness was published 06/16/2020 (Website). The advisory is shared for download at ibm.com. This vulnerability is handled as CVE-2020-4320 since 12/30/2019. The exploitation is known to be difficult. The attack may be launched remotely. The successful exploitation requires a simple authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 06/17/2020). It is expected to see the exploit prices for this product increasing in the near future.The MITRE ATT&CK project declares the attack technique as T1068.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Productinfo

Vendor

• IBM

Name

• IBM MQ AMQP Channels
• MQ Appliance

Version

• 8.0
• 9.0 LTS
• 9.1 CD
• 9.1 LTS

License

• commercial

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